One of my teachers (and closest friends) taught me how to make one of these. As it turns out, students of the 50s, like him, used these to fire matches and toothpicks (I use toothpicks) and it's a lot of fun lawl

ok ill tell you when you are done you take the other side of the closepin than push the metal part with no curl back to the little ditch i ingraved in the ditch so it wouldn't come out then you pull the bottum like a gun trigger i hope this helps if not mabe i could make another video